Synthesis and photophysical properties of 2,1,3-benzothiadiazole-cored H-shaped conjugated compounds

Phenothiazine modified triphenylacrylonitrile derivates: AIE and mechanochromism tuned by molecular conformation

“…8 The Suzuki-Miyaura cross coupling reaction between 1 and 3 catalyzed by Pd(PPh 3 ) 4 in tolueneethanol afforded P3TPAN in a yield of 62%. 16 The Buchwald-Hartwig reaction between 1 and phenothiazine yielded P10TPAN in a yield of 70%. 15 The new compounds were characterized by 1 H NMR, 13 C NMR, FT-IR and MALDI-TOF mass spectrometry.…”

Alphabet‐Inspired Design of (Hetero)Aromatic Push–Pull Chromophores

“…The third group of H‐shaped molecules with a central acceptor unit end‐capped with four peripheral electron donors is shown in Figure . In these molecules, the central π‐conjugated scaffold is often based on heterocyclic moieties, such as bipyrimidine ( 8 ),20 2,3,6,7‐tetraazaanthracene ( 9 ),21 dipyrido[3,2‐ a :2′,3′‐ c ]phenazine ( 10 and 11 ),22 and 2,1,3‐benzothiadiazole ( 12 ) 23. Bipyrimidine 8 has been investigated as a D 2d octupolar chromophore with a large second‐order nonlinear optical response (β/β 0 =190/130 × 10 −30 esu, measured by harmonic light scattering at 1640 nm in CHCl 3 ), tetraazaanthracene 9 showed typical n‐type characteristics and could be considered as a promising candidate for organic electronic devices.…”

Branched benzothiadiazole-cored oligomers with terminal carbazoles: Synthesis and fluorescence probing nitroaromatics

“…960 cm À1 and the absence of the absorption at ca. 830 cm À1 due to cis-double bond further indicated CH]CH were in trans-forms [19]. The thermal properties of 1 and 2 were investigated by thermogravimetric analysis (TGA) under nitrogen atmosphere at a heating and cooling rate of 10 C/min.…”